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首页> 外文会议>International Conference on Multi-Material Micro Manufacture >Analysis of a PECM Electrode Concept for Micro Injection Moulds by Multiphysics Simulation
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Analysis of a PECM Electrode Concept for Micro Injection Moulds by Multiphysics Simulation

机译：多学科仿真分析微注射模具的PECM电极概念

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摘要

In micro injection moulding highly precise cavities are needed to fulfil the requirements in precision and at the same time offer the possibility for easy demoulding. Pulsed Electrochemical Machining (PECM) represents a potential technology for manufacturing mould cavities, because the machined geometries can be equipped with a certain draft angle. In this study the influence of three different electrode concepts on the shape of the draft angle is analysed. The first electrode concept is a non-insulated electrode. As the removal process depends on the distribution of the electric current density, lateral widening increases during the sinking process if a non-insulated electrode is applied. This effect can be reduced by a local insulation of the electrode on its side flanks or by reducing the electrode's cross-sectional diameter by help of an undercut. In order to investigate the influence of these electrode concepts on the resulting geometry, multiphysics simulations of the PECM process were performed. For that purpose a model was created. The machining process was simulated for a processing time of 2400 s. The resulting electric current densities, the removal geometries and the formed radii were analysed and compared to each other.
机译：在微注塑成型中，需要高精度腔以精确地满足要求，同时提供便于脱模的可能性。脉冲电化学加工（PECM）代表了制造模具腔的潜在技术，因为加工的几何形状可以配备有一定的触角。在该研究中，分析了三种不同电极概念对绘制角度形状的影响。第一电极概念是非绝缘电极。由于去除过程取决于电流密度的分布，如果施加非绝缘电极，沉没过程中的横向加宽增加。通过侧面的局部绝缘或通过通过底切的帮助减小电极的横截面直径来减小这种效果。为了研究这些电极概念对所得到的几何形状的影响，进行了PECM过程的多体仿真。对于此目的，创建了模型。模拟加工过程以进行2400秒的处理时间。通过得到的电流密度，去除几何形状和形成的半径彼此进行分析。

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